I just got my new MacBook Pro a week ago and I'm loving it. It was a refurbished model, but so far everything seems to be in perfect working order. Well, possibly except for the optical drive. I've noticed sometimes that when setting down the MBP something in or near the optical drive goes "clunk". This also sometimes happens when adjusting the MBP on my lap. It sounds as if there is an internal mechanism loose, but I'm not sure about taking it into an Apple store because I'm not able to reliably reproduce this sound. Also, I've tested the drive out and it was able to play and rip a DVD just fine, but when reading from the disc it made a lot of loud mechanical noises when the optical sensor was moving to read information from different parts of the disc. These noises stopped when playing the movie or when ripping began, but I'm wondering if these noises are normal?